Breakthrough for Rio Tinto’s $5.4b Mongolia Mine Expansion

By

Rhiannon Hoyle

May 19, 2015 2:49 pm ET

Rio Tinto struck a deal with the Mongolian government after two years of tense negotiations, clearing the way for a $5.4 billion expansion of one of the company’s most significant mining projects, and opening a vast trove of resources that could eventually account for a third of the country’s economy.